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energy efficiency

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Earth

Editorial: How to run the world on renewables

Tapping endless resources of guilt-free energy is no longer a hippy's fuzzy green dream

Opinion

Renewable energy: Electric dreams

Earth

Renewable energy: Electric dreams

Features

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Renewable energy: Power beneath our feet

Features

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Earth

India plans nuclear shopping spree after US green light

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Earth

Renewable energy: The tide is turning

Features

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Earth

Renewable energy: Anywhere the wind blows

Features

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Earth

Renewable energy: Dreams become reality

Features

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Earth

Newly discovered fungus strips pollutants from oil

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Earth

Economic turmoil could scupper EU climate plans

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High-tech sponge could take hydrogen cars further

Earth

High-tech sponge could take hydrogen cars further

The battle to squeeze the most gas safely into hydrogen vehicles continues, but will "nanosponges" or ants' poison win out?

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Earth

Google announces plan to wean US off coal and oil

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Earth

Tax credits promise brighter outlook for solar energy

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Earth

Steam power takes to the road again

Features

Earth

Is Google gobbling up too much power?

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